/* 主色调配色方案 */
:root {
    --primary-color: #1E3A5F;
    --primary-light: #2C5282;
    --primary-dark: #153E75;
    --secondary-color: #3182CE;
    --accent-color: #63B3ED;
    
    /* 状态颜色 */
    --success-color: #38A169;
    --warning-color: #DD6B20;
    --danger-color: #E53E3E;
    --info-color: #4299E1;
    
    /* 中性色 */
    --bg-color: #F7FAFC;
    --card-bg: #FFFFFF;
    --text-primary: #1A202C;
    --text-secondary: #4A5568;
    --text-muted: #718096;
    --border-color: #E2E8F0;
    --hover-bg: #EDF2F7;
    
    /* 字体 */
    --font-sans: 'Microsoft YaHei', 'PingFang SC', -apple-system, BlinkMacSystemFont, sans-serif;
    
    /* 阴影 */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

/* 基础样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-family: var(--font-sans);
    font-size: 14px;
    line-height: 1.5;
    color: var(--text-primary);
    background-color: var(--bg-color);
}

body {
    min-height: 100vh;
}

/* 容器 */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 卡片 */
.card {
    background: var(--card-bg);
    border-radius: 8px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    overflow: hidden;
}

.card-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.card-header h2 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
}

.card-body {
    padding: 20px;
}

/* 按钮 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 8px 16px;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    border: none;
    transition: all 0.2s ease;
    text-decoration: none;
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
}

.btn-primary:hover {
    background-color: var(--primary-light);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background-color: var(--secondary-color);
    color: white;
}

.btn-secondary:hover {
    background-color: var(--accent-color);
}

.btn-success {
    background-color: var(--success-color);
    color: white;
}

.btn-success:hover {
    background-color: #2F855A;
}

.btn-warning {
    background-color: var(--warning-color);
    color: white;
}

.btn-warning:hover {
    background-color: #C05621;
}

.btn-danger {
    background-color: var(--danger-color);
    color: white;
}

.btn-danger:hover {
    background-color: #C53030;
}

.btn-outline {
    background-color: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
}

.btn-outline:hover {
    background-color: var(--hover-bg);
}

.btn-sm {
    padding: 4px 12px;
    font-size: 12px;
}

.btn-lg {
    padding: 12px 24px;
    font-size: 16px;
}

/* 表单 */
.form-group {
    margin-bottom: 16px;
}

.form-label {
    display: block;
    margin-bottom: 6px;
    font-weight: 500;
    color: var(--text-primary);
}

.form-control {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 14px;
    background-color: white;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(30, 58, 95, 0.1);
}

.form-control::placeholder {
    color: var(--text-muted);
}

/* 表格 */
.table {
    width: 100%;
    border-collapse: collapse;
}

.table th,
.table td {
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.table th {
    background-color: var(--hover-bg);
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 13px;
}

.table tr:hover {
    background-color: var(--hover-bg);
}

.table tr:last-child td {
    border-bottom: none;
}

.table tr.clickable-row {
    cursor: pointer;
}

.table tr.clickable-row:hover {
    background-color: var(--hover-bg);
}
    color: var(--success-color);
}

.table .text-warning {
    color: var(--warning-color);
}

.table .text-danger {
    color: var(--danger-color);
}

.table .text-info {
    color: var(--info-color);
}

/* 统计卡片 */
.stat-card {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
    border-radius: 12px;
    padding: 24px;
    color: white;
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 200px;
    height: 200px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
}

.stat-card .stat-value {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 8px;
}

.stat-card .stat-label {
    font-size: 14px;
    opacity: 0.9;
}

.stat-card-success {
    background: linear-gradient(135deg, var(--success-color) 0%, #2F855A 100%);
}

.stat-card-warning {
    background: linear-gradient(135deg, var(--warning-color) 0%, #C05621 100%);
}

.stat-card-info {
    background: linear-gradient(135deg, var(--info-color) 0%, #3182CE 100%);
}

/* 徽章 */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 500;
}

.badge-success {
    background-color: rgba(56, 161, 105, 0.1);
    color: var(--success-color);
}

.badge-warning {
    background-color: rgba(221, 107, 32, 0.1);
    color: var(--warning-color);
}

.badge-danger {
    background-color: rgba(229, 62, 62, 0.1);
    color: var(--danger-color);
}

.badge-info {
    background-color: rgba(66, 153, 225, 0.1);
    color: var(--info-color);
}

/* 导航 */
.sidebar {
    width: 250px;
    background-color: var(--primary-color);
    min-height: 100vh;
    position: fixed;
    left: 0;
    top: 0;
    padding: 20px 0;
}

.sidebar .logo {
    padding: 0 20px;
    margin-bottom: 30px;
}

.sidebar .logo h1 {
    color: white;
    font-size: 18px;
    font-weight: 600;
}

.sidebar .menu {
    list-style: none;
}

.sidebar .menu li {
    margin-bottom: 4px;
}

.sidebar .menu li a {
    display: flex;
    align-items: center;
    padding: 12px 20px;
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: all 0.2s ease;
    font-size: 14px;
}

.sidebar .menu li a:hover {
    background-color: rgba(255, 255, 255, 0.1);
    color: white;
}

.sidebar .menu li.active a {
    background-color: rgba(255, 255, 255, 0.15);
    color: white;
    border-left: 3px solid var(--accent-color);
}

.sidebar .menu li a i {
    margin-right: 10px;
    width: 20px;
}

/* 顶部导航 */
.header {
    background-color: white;
    box-shadow: var(--shadow-sm);
    padding: 12px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 100;
}

.header .search-box {
    flex: 1;
    max-width: 400px;
    margin: 0 20px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.header .search-box input {
    flex: 1;
    padding: 10px 16px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 14px;
    background-color: var(--bg-color);
}

.header .user-info {
    display: flex;
    align-items: center;
}

.header .user-info span {
    margin-right: 16px;
    font-size: 14px;
    color: var(--text-secondary);
}

.header .user-info a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
}

.header .user-info a:hover {
    color: var(--primary-color);
}

/* 主内容区 */
.main-content {
    margin-left: 250px;
    padding: 24px;
    min-height: 100vh;
}

/* 网格布局 */
.grid {
    display: grid;
    gap: 20px;
}

.grid-2 {
    grid-template-columns: repeat(2, 1fr);
}

.grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
    grid-template-columns: repeat(4, 1fr);
}

.grid-5 {
    grid-template-columns: repeat(5, 1fr);
}

/* 表单容器 */
.form-container {
    max-width: 600px;
    margin: 0 auto;
}

/* 模态框 */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal {
    background-color: white;
    border-radius: 8px;
    width: 90%;
    max-width: 500px;
    overflow: hidden;
}

.modal-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    font-size: 16px;
    font-weight: 600;
}

.modal-header .close-btn {
    background: none;
    border: none;
    font-size: 20px;
    cursor: pointer;
    color: var(--text-muted);
}

.modal-body {
    padding: 20px;
}

.modal-footer {
    padding: 16px 20px;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: 10px;
}

/* 分页 */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    margin-top: 20px;
}

.pagination a {
    padding: 6px 12px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    text-decoration: none;
    color: var(--text-secondary);
    transition: all 0.2s ease;
}

.pagination a:hover {
    background-color: var(--hover-bg);
}

.pagination a.active {
    background-color: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.pagination .disabled {
    opacity: 0.5;
    pointer-events: none;
}

/* 登录页面 */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
}

.login-box {
    background-color: white;
    border-radius: 12px;
    padding: 40px;
    box-shadow: var(--shadow-lg);
    width: 100%;
    max-width: 400px;
}

.login-box .logo {
    text-align: center;
    margin-bottom: 30px;
}

.login-box .logo h1 {
    color: var(--primary-color);
    font-size: 24px;
    font-weight: 700;
}

.login-box .form-group {
    margin-bottom: 20px;
}

.login-box .btn {
    width: 100%;
    margin-top: 10px;
}

.login-box .forgot-link {
    text-align: right;
    margin-top: 12px;
}

.login-box .forgot-link a {
    color: var(--secondary-color);
    text-decoration: none;
    font-size: 13px;
}

/* 空状态 */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-muted);
}

.empty-state i {
    font-size: 48px;
    margin-bottom: 16px;
    opacity: 0.5;
}

.empty-state p {
    font-size: 14px;
}

/* 进度条 */
.progress-bar {
    height: 8px;
    background-color: var(--border-color);
    border-radius: 4px;
    overflow: hidden;
}

.progress-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    border-radius: 4px;
    transition: width 0.3s ease;
}

/* 响应式 */
@media (max-width: 768px) {
    .sidebar {
        width: 100%;
        position: relative;
        min-height: auto;
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }
    
    .header {
        flex-direction: column;
        gap: 12px;
    }
    
    .header .search-box {
        margin: 0;
        width: 100%;
        max-width: none;
    }
}